а) X+155X+155X+155 - 35 = 145X + 155 - 35 = 145X + 120 = 145X = 145 - 120X = 25
б) 168 - 98+z98 + z98+z = 65168 - 98 - z = 6570 - z = 65-z = 65 - 70-z = -5z = 5
Ответ: а) X = 25, б) z = 5
а) X+155X+155X+155 - 35 = 145
X + 155 - 35 = 145
X + 120 = 145
X = 145 - 120
X = 25
б) 168 - 98+z98 + z98+z = 65
168 - 98 - z = 65
70 - z = 65
-z = 65 - 70
-z = -5
z = 5
Ответ: а) X = 25, б) z = 5